Title:
HEAVY-FLOATING COMBINED BENEFICIATION METHOD FOR IRON-RICH HIGH-SULFUR SULFATE SLAG
Document Type and Number:
WIPO Patent Application WO/2022/052717
Kind Code:
A1
Abstract:
Disclosed in the present invention is a heavy-floating combined beneficiation method for iron-rich high-sulfur sulfate slag, comprising: performing a screening-classification operation on the iron-rich high-sulfur sulfate slag; feeding first-stage cyclone grit and performing a gravity separation-screening operation to obtain first-stage spiral rough concentrate; combining and feeding first-stage spiral rough tailings and second-stage spiral tailings, and performing a screening-ore grinding-classification operation; and combining first-stage cyclone overflow and second-stage cyclone overflow, and performing a concentrated desliming-reverse flotation operation to obtain final concentrate having TFe content of greater than 62.0% and S content of less than or equal to 0.18%, wherein the flow of a reverse flotation system comprises a roughing operation and three cleaning operations. The method of the present invention features strong material adaptability, stable separating index, energy conservation and consumption reduction, and is particularly suitable for performing beneficiation treatment on the iron-rich high-sulfur sulfate slag having TFe content of 50.0-55.5% and S content of 0.7-1.2%.
Inventors:
GAO CHUNQING (CN)
HOU GENGHE (CN)
WANG HAILIANG (CN)
SHEN JINJIE (CN)
LUO HONGZHEN (CN)
SUN BINGQUAN (CN)
ZHONG SUJIAO (CN)
HOU GENGHE (CN)
WANG HAILIANG (CN)
SHEN JINJIE (CN)
LUO HONGZHEN (CN)
SUN BINGQUAN (CN)
ZHONG SUJIAO (CN)
Application Number:
PCT/CN2021/111868
Publication Date:
March 17, 2022
Filing Date:
August 10, 2021
Export Citation:
Assignee:
SINOSTEEL MAANSHAN GENERAL INSTITUTE OF MINING RES CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZ (CN)
SINOSTEEL NANJING HUAXIN TECH CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZ (CN)
SINOSTEEL NANJING HUAXIN TECH CO LTD (CN)
International Classes:
B03B7/00; B03B9/00; B03D1/018; B03D101/02; B03D103/02
Foreign References:
| CN112090577A | 2020-12-18 | |||
| CN101413057A | 2009-04-22 | |||
| US20180111131A1 | 2018-04-26 |
Other References:
ZHU LAMEI: "Industrial test research on iron beneficiation of sulfuric acid slag in Yongping copper mine", EXPRESS INFORMATION OF MINING INDUSTRY., no. 12, 1 December 2008 (2008-12-01), pages 72 - 74, XP055911505, ISSN: 1009-5683
Attorney, Agent or Firm:
MA'ANSHAN CITY JINQIAO PATENT AGENT LTD. (CN)
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